摘要
设备到设备(Device to Device,D2D)直通技术通过复用蜂窝系统的频谱资源来提升频谱利用率,已经成为5G候选技术之一。然而,资源复用带来了干扰管理和通信模式选择等难题。为此,文中结合干扰管理研究D2D通信模式选择问题,与现有研究仅考虑D2D链路对蜂窝链路的干扰管理不同,文中同时考虑蜂窝用户和D2D链路的干扰抑制问题。针对D2D复用蜂窝下行链路场景,分别研究了干信比约束下的蜂窝用户下行干扰抑制区(DILA)和D2D用户有效通信区域,进而结合二者提出了一种全新的D2D通信模式选择方案,实现了用户对D2D复用模式、D2D专用模式、蜂窝模式3种通信模式的快速选择。仿真结果表明,相比现有的通信模式选择方案,文中提出的联合DILA和D2D通信范围的模式选择方案能够给用户提供更高的D2D通信机会和更高的系统吞吐量。
A device⁃to⁃device(D2D)pass⁃through technology can improve the spectrum utilization by reusing the spectrum resources of cellular systems,thus it has become one of the 5G candidate technologies.However,the resource reuse brings some problems,such as interference management and communication mode selection.For this reason,this paper studies the D2D communication mode selection in combination with interference management.The existing literatures only consider the interference management of D2D link to cellular link,but this paper considers the interference suppression problems of both cellular users and D2D link.In view of the D2D multiplexing cellular downlink scenario,the downlink interference limited area(DILA)and the effective communication area of the D2D user under the interference signal ratio constraint are studied,repectively.A novel D2D communication mode selection scheme is proposed by combining DILA with D2D communication area,realizing the user rapid selection of three communication modes,i.e.,D2D reuse mode,D2D special mode and cellular mode.Simulation results show that the scheme can provide higher D2D communication opportunities and higher system throughput for users compared with the existing communication mode selection schemes.
作者
刘金鑫
张晶
董俊
董洁
LIU Jinxin;ZHANG Jing;DONG Jun;DONG Jie(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Jiangsu Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Institute of Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Institute of Intelligent Machines of Hefei Institute of Physical Science,Chinese Academy of Sciences,Hefei 230031,China;Anhui Zhongke Deji Intelligent Technology Co.Ltd.,Hefei 230031,China;The State Radio Monitoring Center,Beijing 100037,China)
出处
《南京邮电大学学报（自然科学版）》
北大核心
2021年第4期43-50,共8页
Journal of Nanjing University of Posts and Telecommunications：Natural Science Edition
基金
国家自然科学基金(92067201)
国家重点研发计划(2020YFB1807202)
江苏省自然科学基金(BK20130875)
南京邮电大学校级科研基金(NY219044)资助项目。
关键词
D2D
干扰抑制区
干信比
模式选择
device⁃to⁃device(D2D)
interference limit area
interference to signal ratio
mode selection
